功能代码。它的工作非常缓慢。我怎样才能加快速度
CREATE OR REPLACE FUNCTION bill."ReportIngredients"(
_from date,
_to date,
_beginning_date date,
_has_inventory boolean,
_inventory_id uuid,
_restaurant_id uuid,
_stock_id uuid,
_ingredientIds uuid [],
_sort_by character varying,
_limit integer,
_offset integer
)
RETURNS TABLE(
json json
) AS
$BODY$
declare
ingredientFilter character varying = '';
ingredient_id uuid;
ss_date date;
begin
if ( _ingredientIds is not null ) then
ingredientFilter = 'and i.id IN (';
FOREACH ingredient_id in array _ingredientIds loop
ingredientFilter := ingredientFilter || '''' || ingredient_id || ''',';
end loop;
Select trim(trailing ',' from ingredientFilter) into ingredientFilter;
ingredientFilter := ingredientFilter || ') ';
end if;
if ( _has_inventory ) then
return query execute
'select array_to_json(array_agg(row_to_json(t)))
From (
Select i.id, i.title,
(
(
SELECT coalesce(sum(ii.delta_count), 0)
FROM inventory_ingredients ii
Inner Join inventories inven On inven.id = ii.inventory_id
WHERE ii.ingredient_id = i.id
And inven.is_active = true
And inven.stock_id = ''' || _stock_id || '''
And inven.id = ''' || _inventory_id || '''
) + (
SELECT coalesce(sum(ii.count), 0)
FROM invoice_ingredients ii
Inner Join invoices invo On invo.id = ii.invoice_id
WHERE ii.is_active = true
And ii.ingredient_id = i.id
And invo.is_active = true
And invo.restaurant_id = ''' || _restaurant_id || '''
And invo.receiver_id = ''' || _stock_id || '''
And invo.date >= ''' || _beginning_date || '''
And invo.date < ''' || _from || '''
) + (
SELECT coalesce(sum(ri.count), 0)
FROM relocation_ingredients ri
Inner Join relocations r On r.id = ri.relocation_id
WHERE ri.ingredient_id = i.id
And r.is_active = true
And r.restaurant_id = ''' || _restaurant_id || '''
And r.receiver_stock_id = ''' || _stock_id || '''
And r.date >= ''' || _beginning_date || '''
And r.date < ''' || _from || '''
) - (
SELECT coalesce(sum(wi.count), 0)
FROM write_off_ingredients wi
Inner Join write_offs w On w.id = wi.write_off_id
WHERE wi.ingredient_id = i.id
And w.is_active = true
And w.stock_id = ''' || _stock_id || '''
And w.date >= ''' || _beginning_date || '''
And w.date < ''' || _from || '''
) - (
SELECT coalesce(sum(ri.count), 0)
FROM relocation_ingredients ri
Inner Join relocations r On r.id = ri.relocation_id
WHERE ri.ingredient_id = i.id
And r.is_active = true
And r.restaurant_id = ''' || _restaurant_id || '''
And r.sender_stock_id = ''' || _stock_id || '''
And r.date >= ''' || _beginning_date || '''
And r.date < ''' || _from || '''
) - (
Select ((
SELECT coalesce(sum(bc.count), 0)
FROM bill_calculations bc
Inner Join bill.bill_course_solds bcs on bcs.id = bc.object_id
Inner Join bill.bills b on b.id = bcs.bill_id
WHERE bc.ingredient_id = i.id
And bc.stock_id = ''' || _stock_id || '''
And bc.date >= ''' || _beginning_date || '''
And bc.date < ''' || _from || '''
And bc.calculate_type = ''subtract''
And b.bill_type <> 5
) - (
SELECT coalesce(sum(bc.count), 0)
FROM bill_calculations bc
Inner Join bill.bill_course_resigns bcr on bcr.id = bc.object_id
Inner Join bill.bill_course_solds bcs on bcs.id = bcr.bill_course_sold_id
Inner Join bill.bills b on b.id = bcs.bill_id
WHERE bc.ingredient_id = i.id
And bc.stock_id = ''' || _stock_id || '''
And bc.date >= ''' || _beginning_date || '''
And bc.date < ''' || _from || '''
And bc.calculate_type = ''add''
And b.bill_type <> 5
)) AS sum
)
) AS start_count,
(
SELECT coalesce(sum(ii.count), 0)
FROM invoice_ingredients ii
Inner Join invoices invo On invo.id = ii.invoice_id
WHERE ii.is_active = true
And ii.ingredient_id = i.id
And invo.is_active = true
And invo.restaurant_id = ''' || _restaurant_id || '''
And invo.receiver_id = ''' || _stock_id || '''
And invo.date >= ''' || _from || '''
And invo.date <= ''' || _to || '''
) AS invoice_count,
(
SELECT coalesce(sum(ri.count), 0)
FROM relocation_ingredients ri
Inner Join relocations r On r.id = ri.relocation_id
WHERE ri.ingredient_id = i.id
And r.is_active = true
And r.restaurant_id = ''' || _restaurant_id || '''
And r.receiver_stock_id = ''' || _stock_id || '''
And r.date >= ''' || _from || '''
And r.date <= ''' || _to || '''
) AS relocation_in_count,
(
SELECT coalesce(sum(wi.count), 0)
FROM write_off_ingredients wi
Inner Join write_offs w On w.id = wi.write_off_id
WHERE wi.ingredient_id = i.id
And w.is_active = true
And w.stock_id = ''' || _stock_id || '''
And w.date >= ''' || _from || '''
And w.date <= ''' || _to || '''
) AS write_off_count,
(
SELECT coalesce(sum(ri.count), 0)
FROM relocation_ingredients ri
Inner Join relocations r On r.id = ri.relocation_id
WHERE ri.ingredient_id = i.id
And r.is_active = true
And r.restaurant_id = ''' || _restaurant_id || '''
And r.sender_stock_id = ''' || _stock_id || '''
And r.date >= ''' || _from || '''
And r.date <= ''' || _to || '''
) AS relocation_out_count,
(
Select ((
SELECT coalesce(sum(bc.count), 0)
FROM bill_calculations bc
Inner Join bill.bill_course_solds bcs on bcs.id = bc.object_id
Inner Join bill.bills b on b.id = bcs.bill_id
WHERE bc.ingredient_id = i.id
And bc.stock_id = ''' || _stock_id || '''
And bc.date >= ''' || _from || '''
And bc.date <= ''' || _to || '''
And bc.calculate_type = ''subtract''
And b.bill_type <> 5
) - (
SELECT coalesce(sum(bc.count), 0)
FROM bill_calculations bc
Inner Join bill.bill_course_resigns bcr on bcr.id = bc.object_id
Inner Join bill.bill_course_solds bcs on bcs.id = bcr.bill_course_sold_id
Inner Join bill.bills b on b.id = bcs.bill_id
WHERE bc.ingredient_id = i.id
And bc.stock_id = ''' || _stock_id || '''
And bc.date >= ''' || _from || '''
And bc.date <= ''' || _to || '''
And bc.calculate_type = ''add''
And b.bill_type <> 5
)) AS sum
) AS solds_count,
(
SELECT coalesce(sum(bc.count), 0)
FROM bill_calculations bc
Inner Join bill.bill_course_resigns bcr on bcr.id = bc.object_id
Inner Join bill.bill_course_solds bcs on bcs.id = bcr.bill_course_sold_id
Inner Join bill.bills b on b.id = bcs.bill_id
WHERE bc.ingredient_id = i.id
And bc.stock_id = ''' || _stock_id || '''
And bc.date >= ''' || _from || '''
And bc.date <= ''' || _to || '''
And bc.calculate_type = ''add''
And b.bill_type <> 5
) AS resign_count
From ingredients i
Where i.is_active = true
And i.restaurant_id = ''' || _restaurant_id || '''
' || ingredientFilter || '
Group by i.id
order by ' || _sort_by || '
limit ' || _limit || '
offset ' || _offset || '
) t';
else
return query execute
'select array_to_json(array_agg(row_to_json(t)))
From (
Select i.id, i.title,
(
(
SELECT coalesce(sum(ii.count), 0)
FROM invoice_ingredients ii
Inner Join invoices invo On invo.id = ii.invoice_id
WHERE ii.is_active = true
And ii.ingredient_id = i.id
And invo.is_active = true
And invo.restaurant_id = ''' || _restaurant_id || '''
And invo.receiver_id = ''' || _stock_id || '''
And invo.date >= ''' || _beginning_date || '''
And invo.date < ''' || _from || '''
) + (
SELECT coalesce(sum(ri.count), 0)
FROM relocation_ingredients ri
Inner Join relocations r On r.id = ri.relocation_id
WHERE ri.ingredient_id = i.id
And r.is_active = true
And r.restaurant_id = ''' || _restaurant_id || '''
And r.receiver_stock_id = ''' || _stock_id || '''
And r.date >= ''' || _beginning_date || '''
And r.date < ''' || _from || '''
) - (
SELECT coalesce(sum(wi.count), 0)
FROM write_off_ingredients wi
Inner Join write_offs w On w.id = wi.write_off_id
WHERE wi.ingredient_id = i.id
And w.is_active = true
And w.stock_id = ''' || _stock_id || '''
And w.date >= ''' || _beginning_date || '''
And w.date < ''' || _from || '''
) - (
SELECT coalesce(sum(ri.count), 0)
FROM relocation_ingredients ri
Inner Join relocations r On r.id = ri.relocation_id
WHERE ri.ingredient_id = i.id
And r.is_active = true
And r.restaurant_id = ''' || _restaurant_id || '''
And r.sender_stock_id = ''' || _stock_id || '''
And r.date >= ''' || _beginning_date || '''
And r.date < ''' || _from || '''
) - (
Select ((
SELECT coalesce(sum(bc.count), 0)
FROM bill_calculations bc
Inner Join bill.bill_course_solds bcs on bcs.id = bc.object_id
Inner Join bill.bills b on b.id = bcs.bill_id
WHERE bc.ingredient_id = i.id
And bc.stock_id = ''' || _stock_id || '''
And bc.date >= ''' || _beginning_date || '''
And bc.date < ''' || _from || '''
And bc.calculate_type = ''subtract''
And b.bill_type <> 5
) - (
SELECT coalesce(sum(bc.count), 0)
FROM bill_calculations bc
Inner Join bill.bill_course_resigns bcr on bcr.id = bc.object_id
Inner Join bill.bill_course_solds bcs on bcs.id = bcr.bill_course_sold_id
Inner Join bill.bills b on b.id = bcs.bill_id
WHERE bc.ingredient_id = i.id
And bc.stock_id = ''' || _stock_id || '''
And bc.date >= ''' || _beginning_date || '''
And bc.date < ''' || _from || '''
And bc.calculate_type = ''add''
And b.bill_type <> 5
)) AS sum
)
) AS start_count,
(
SELECT coalesce(sum(ii.count), 0)
FROM invoice_ingredients ii
Inner Join invoices invo On invo.id = ii.invoice_id
WHERE ii.is_active = true
And ii.ingredient_id = i.id
And invo.is_active = true
And invo.restaurant_id = ''' || _restaurant_id || '''
And invo.receiver_id = ''' || _stock_id || '''
And invo.date >= ''' || _from || '''
And invo.date <= ''' || _to || '''
) AS invoice_count,
(
SELECT coalesce(sum(ri.count), 0)
FROM relocation_ingredients ri
Inner Join relocations r On r.id = ri.relocation_id
WHERE ri.ingredient_id = i.id
And r.is_active = true
And r.restaurant_id = ''' || _restaurant_id || '''
And r.receiver_stock_id = ''' || _stock_id || '''
And r.date >= ''' || _from || '''
And r.date <= ''' || _to || '''
) AS relocation_in_count,
(
SELECT coalesce(sum(wi.count), 0)
FROM write_off_ingredients wi
Inner Join write_offs w On w.id = wi.write_off_id
WHERE wi.ingredient_id = i.id
And w.is_active = true
And w.stock_id = ''' || _stock_id || '''
And w.date >= ''' || _from || '''
And w.date <= ''' || _to || '''
) AS write_off_count,
(
SELECT coalesce(sum(ri.count), 0)
FROM relocation_ingredients ri
Inner Join relocations r On r.id = ri.relocation_id
WHERE ri.ingredient_id = i.id
And r.is_active = true
And r.restaurant_id = ''' || _restaurant_id || '''
And r.sender_stock_id = ''' || _stock_id || '''
And r.date >= ''' || _from || '''
And r.date <= ''' || _to || '''
) AS relocation_out_count,
(
Select ((
SELECT coalesce(sum(bc.count), 0)
FROM bill_calculations bc
Inner Join bill.bill_course_solds bcs on bcs.id = bc.object_id
Inner Join bill.bills b on b.id = bcs.bill_id
WHERE bc.ingredient_id = i.id
And bc.stock_id = ''' || _stock_id || '''
And bc.date >= ''' || _from || '''
And bc.date <= ''' || _to || '''
And bc.calculate_type = ''subtract''
And b.bill_type <> 5
) - (
SELECT coalesce(sum(bc.count), 0)
FROM bill_calculations bc
Inner Join bill.bill_course_resigns bcr on bcr.id = bc.object_id
Inner Join bill.bill_course_solds bcs on bcs.id = bcr.bill_course_sold_id
Inner Join bill.bills b on b.id = bcs.bill_id
WHERE bc.ingredient_id = i.id
And bc.stock_id = ''' || _stock_id || '''
And bc.date >= ''' || _from || '''
And bc.date <= ''' || _to || '''
And bc.calculate_type = ''add''
And b.bill_type <> 5
)) AS sum
) AS solds_count,
(
SELECT coalesce(sum(bc.count), 0)
FROM bill_calculations bc
Inner Join bill.bill_course_resigns bcr on bcr.id = bc.object_id
Inner Join bill.bill_course_solds bcs on bcs.id = bcr.bill_course_sold_id
Inner Join bill.bills b on b.id = bcs.bill_id
WHERE bc.ingredient_id = i.id
And bc.stock_id = ''' || _stock_id || '''
And bc.date >= ''' || _from || '''
And bc.date <= ''' || _to || '''
And bc.calculate_type = ''add''
And b.bill_type <> 5
) AS resign_count
From ingredients i
Where i.is_active = true
And i.restaurant_id = ''' || _restaurant_id || '''
' || ingredientFilter || '
Group by i.id
order by ' || _sort_by || '
limit ' || _limit || '
offset ' || _offset || '
) t';
end if;
end;
$BODY$
LANGUAGE plpgsql STABLE
COST 50
ROWS 1000;
ALTER FUNCTION bill."ReportIngredients"(date, date, date, boolean, uuid, uuid, uuid, uuid[], character varying, integer, integer)
OWNER TO developer;
EXPLAIN ANALYZE结果
"Result (cost=0.00..5.13 rows=1000 width=0) (actual time=38859.253..38859.254 rows=1 loops=1)" "Total runtime: 38859.296 ms"
答案 0 :(得分：2)
你有大约14个子查询，由于索引缺失或统计数据不好，其中任何一个都可能导致90％的执行时间，并且每个子查询似乎都是针对从这些成分预测的每种成分执行的表查询。因此，如果有50种成分，则子查询的每次执行平均需要40ms - 这听起来不合理吗？
我建议您执行实际的SQL并查看子查询是否确实执行了很多次。如果是这样，尝试将查询重组为一组公共表表达式，从选择成分开始，并在每个子查询中使用一个CTE，在其中加入成分列表并汇总到成分级别。在查询的最后部分加入CTE。
你最终会得到的结果如下：
with
cte_ingredients as (
select id,
title
from ingredients
where ...),
cte_invoice_ingredients as (
SELECT i.id,
sum(ii.count) amt
FROM cte_ingredients i join
invoice_ingredients ii on ii.ingredient_id = i.id
Inner Join invoices invo On invo.id = ii.invoice_id
WHERE ii.is_active = true
And invo.is_active = true
And invo.restaurant_id = ''' || _restaurant_id || '''
And invo.receiver_id = ''' || _stock_id || '''
And invo.date >= ''' || _beginning_date || '''
And invo.date < ''' || _from || '''
group by i.id),
... rest of the CTE's ...
select i.id,
i.title,
coalesce(ii.amt,0) ii_amt,
... blah blah arithmetic ..
from cte_ingredients i left join
cte_invoice_ingredients ii on i.id = ii.id